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Portable home made welder alternator.

Building the brackets
Why build when you can buy?
Choosing the right engine
Choosing an alternator based on your engine
Keeping it ........ Exciting
The sum of all the parts. Hooking it all up.
Balancing it all out
Putting the welder to use
Injury and or death
Credit where credit is due.

Attatching the alternator to the engine.


Pulleys are used to step up the RPM's to 3-9000 rpm's.  If you choose to use the original alternator pulley the belt may have a tendancy to slip.  The bigger the diameter of the pulley the more contact area the belt has to grip.  A 6-8 inch engine pulley requires a 3-4 inch alternator pulley.  Go as large as you can and keep this approximate ratio.   Less belt tension is required for larger pulleys so this equates into a longer life for the mechanical parts.  New pulleys can be found cheaply on Burdens Surplus or  Expect to spend $15-$25. 


Brackets can be easily designed by using carboard and laying the holes out with a geometry compass to mesure and mark distances between mounting holes.  Test fit the cardboard then make it permanent.

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